当前位置： SCI文献检索 > CHEMICO-BIOLOGICAL INTERACTIONS期刊下所有文献 > Bis(12)-hupyridone, a novel acetylcholinesterase inhibitor, protects against glutamate-induced neuronal excitotoxicity via activating α7 nicotinic acetylcholine receptor/phosphoinositide 3-kinase/Akt cascade.

Bis(12)-hupyridone, a novel acetylcholinesterase inhibitor, protects against glutamate-induced neuronal excitotoxicity via activating α7 nicotinic acetylcholine receptor/phosphoinositide 3-kinase/Akt cascade.

Abstract：

:Bis(12)-hupyridone (B12H), derived from the Chinese medicinal component huperzine A, was originally designed as a novel acetylcholinesterase (AChE) inhibitor. In this paper, we report that B12H (24-h pretreatment) effectively blocked glutamate-induced neuronal excitotoxicity in cerebellar granule neurons (CGNs). However, the huge discrepancy between the EC50 value and IC50 value of B12H, to protect against neuronal toxicity (0.09 μM) and to block the NMDA receptor (21.8 μM) respectively, suggests that the neuroprotection of B12H might be not primarily due to the blockade of the NMDA receptor. Pretreatment by specific antagonists of alpha7-nicotinic acetylcholine receptor (α7nAChR), but not muscarinic acetylcholine receptor (mAChR) or α4β2nAChR, decreased the neuroprotection of B12H. The neuroprotection of B12H could also be abolished by the pretreatment of specific PI3-K inhibitors. Furthermore, B12H restored the suppressed activation of the Akt pathway caused by glutamate as evidenced by the decreased expressions of pSer473-Akt and pSer9-GSK3β. All these results suggest that B12H substantially protected CGNs against glutamate-induced neuronal excitotoxicity via activating α7nAChR/PI3-K/Akt cascade.

journal_name

Chem Biol Interact

journal_title

Chemico-biological interactions

authors

Cui W,Hu S,Chan HH,Luo J,Li W,Mak S,Choi TC,Rong J,Carlier PR,Han Y

doi

10.1016/j.cbi.2012.10.003

subject

Has Abstract

pub_date

2013-03-25 00:00:00

pages

365-70

issue

1

eissn

0009-2797

issn

1872-7786

pii

S0009-2797(12)00200-1

journal_volume

203

pub_type

杂志文章

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